3 years ago

What is a reactant of a chemical reaction?

1 answer:

6 0

The reactant of a chemical reaction is one of the two or more substances in a chemical reaction. This image should help:

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4 physical properties of spoonfull of sugar

almond37 [142]

Small crystals
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3 years ago

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. Write the following isotope in nuclide notation (e.g., “ ”): copper-70

vekshin1

Answer:

${\boxed{\text{$_{29}^{70}${Cu}}}$

Explanation:

The atomic number (Z) of copper is 29 and this isotope has an atomic mass (A) of 70.

The general symbol for an isotope E is $_{Z}^{A}\text{E}$ .

The atomic number is a left subscript, and the atomic mass is a left superscript.

$\rm {\text{The nuclide notation for copper-70 is }}{\boxed{\textbf{$_{29}^{70}${Cu}}}$

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3 years ago

Choose all dat apply thankssssssssss

slamgirl [31]

Itz defs B and E it might be D also bit iffy on that

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A chemist is using a solution of HNO3 that has a pH of 3. 75. What is [H ] for the solution? Round to the nearest hundredth. × 1

Alexeev081 [22]

The estimation of the acidic and the basic character of a solution is called and defined by the pH. The $\rm [H^{+}]$ concentration of the solution will be $\rm 1.77\times 10^{-4}.$

pH is a measurement of the free hydrogen and hydroxyl ions in the solution of the substance.

It can be calculated as:

$\rm pH = - \rm log[H^{+}]$

Given,

pH = 3.75

Substituting values in the equation:

$\begin{aligned}\rm 3.75 &= -\rm log[H^{+}]\\\\\rm [H^{+}] &= 10^{-3.75}\\\\&= 1.7782 \times 10^{-4}\end{aligned}$

Therefore, $\rm 1.77\times 10^{-4}$ is the concentration of the hydrogen ions.

Learn more about pH here:

brainly.com/question/10285267

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What kind of scientist would study the effects of acid rain on marble statues?

Leto [7]

Answer:

A chemist

I hope this helped :D

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